多分量LFM信号检测与参数估计的新方法  

A Novel Method for Extraction of In-Pulse Features of Multi-Component LFM Signal

作　　者：陈昌孝[1] 何明浩[2] 董仕斌[2] 

机构地区：[1]空军雷达学院研究生管理大队,湖北武汉430019 [2]空军雷达学院训练部,湖北武汉430019

出　　处：《现代防御技术》2008年第3期122-126,共5页Modern Defence Technology

基　　金：国防预研基金资助项目(J1442050204JB4901)

摘　　要：针对传统的多分量LFM信号检测与参数估计中存在的精度不高和交叉项问题,将小波重排与Hough变换结合起来,首先对信号进行小波变换,克服交叉项干扰,再经过时频重排保证精度,以重排后的时频分布作为图像,利用Hough变换通过查表的方式,实现对各分量的依次截取和参数估计。仿真实验表明,该方法能够有效地提取多分量LFM信号中各分量的特征参数。Aiming on the problem of low precision and crossterm in the conventional method of Multi-component LFM Signal detection and parameter estimation.A time-frequency associated analyzed method based on wavelet transform and time-frequency reassignment and Hough transform is proposed.Overcome the interferences of crossterm by wavelet transform,guarantee the accuracy by time-frequency reassignment,use the distribution of time-frequency after reassignment as the image, then achieves the interception of component a...

关 键 词：多分量线性调频信号 小波变换 时频重排 HOUGH变换 

分 类 号：TN911[电子电信—通信与信息系统]